how can we calculate reflux ratio? what is difference between internal reflux and external reflux?

0 Answers   Sabic,

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Is it ever advantageous to use shells in series even though it may not be necessary?

0 Answers  

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Question 76 - Let C% be the fractional crystallinity, Rs = density of sample, Ra = density of amorphous form and Rc = density of crystalline form. In a polymer, these unknowns could be related by the equation C% = (Rc / Rs) (Rs - Ra) / (Rc - Ra). (a) Find the equation of Rc as a function of C%, Rs and Ra. (b) Two samples of a polymer, C and D exist. For sample C, C% = 0.513 when Rs = 2.215 unit. For sample D, C% = 0.742 when Rs = 2.144 unit. Both samples C and D have the same values of Ra and Rc. Find the values of Ra and Rc in 6 decimal places.

1 Answers  

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sir i am senthil B.Tech Chemical Engineer which book is refer for objective type questions?

2 Answers   BARC, GATE,

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Need to design filter...Length and diamter of shell

1 Answers  

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What does Dew point -40C mean in an air drying unit.

4 Answers  

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Question 48 - Let a ^ 2 = a x a and a ^ 3 = a x a x a where ^ is power function. Niobium is a metal with a body-centered cubic structure. The length of the unit cell structure is b = 0.3349 nm. (a) Find the volume for a unit cell structure for niobium. (b) There are 2 atoms per unit cell structure of niobium. The metal has a molar mass of 92.9 g / mol. One mole of the metal consists of 6.02 x 10 ^ 23 atoms. Find the mass of niobium per unit cell and the density of niobium.

1 Answers  

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viscosty of crude use for petroliun?

4 Answers   ONGC,

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EXAMPLE 34.14 : For a formula of y = [ 1 - 1 / (1 + r) ^ n ] / r, let y = present value, r = interest rate / year, n = number of years to future value of 1 : (a) Find a simple mathematical relationship of y as a function of r when n = 1 million years. (b) What is the present value of $10000, if the annual discount rate is 10 %, forever?

1 Answers  

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SSR meanig

1 Answers  

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could anyone send me model question papers or outline of graduate trainee(chemical engg) post?

0 Answers   NPCIL,

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What are the steps involved in wine making?

2 Answers   Aramco,

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